diff options
| author | Dave Airlie <airlied@starflyer.(none)> | 2006-01-03 18:18:01 +1100 |
|---|---|---|
| committer | Dave Airlie <airlied@linux.ie> | 2006-01-03 18:18:01 +1100 |
| commit | 97f2aab6698f3ab2552c41c1024a65ffd0763a6d (patch) | |
| tree | bb6e3b2949459f54f884c710fc74d40eef00d834 /include/linux/bitops.h | |
| parent | d985c1088146607532093d9eaaaf99758f6a4d21 (diff) | |
| parent | 88026842b0a760145aa71d69e74fbc9ec118ca44 (diff) | |
drm: merge in Linus mainline
Diffstat (limited to 'include/linux/bitops.h')
| -rw-r--r-- | include/linux/bitops.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index cb3c3ef50f50..38c2fb7ebe09 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -84,6 +84,16 @@ static __inline__ int get_bitmask_order(unsigned int count) return order; /* We could be slightly more clever with -1 here... */ } +static __inline__ int get_count_order(unsigned int count) +{ + int order; + + order = fls(count) - 1; + if (count & (count - 1)) + order++; + return order; +} + /* * hweightN: returns the hamming weight (i.e. the number * of bits set) of a N-bit word |